What is the smallest integer greater than 0 that can be written entirely with zeros and ones and is evenly divisible by 225?

The Official solution says... 11,111,111,100 is the smallest integer ( that can be written entirely with zeros and ones ) divisible by 225

Why not 1,000,000,000 ?

It is certainly smaller than the official solution and made up of 1s and 0s

Posted by Syzygy on 2004-09-23 11:57:13